Commit Graph

276 Commits

Author SHA1 Message Date
Tim Allclair
3f510c69f6 Remove dead code from pkg/kubelet/... 2019-08-21 10:40:21 -07:00
Kubernetes Prow Robot
59d29b67d9
Merge pull request #59484 from verb/debug-kubelet-1
Add support for Ephemeral Containers to the kubelet
2019-08-21 00:29:17 -07:00
Kubernetes Prow Robot
e319abf274
Merge pull request #81163 from jsafrane/skip-unused-volumes
Skip unused volumes in VolumeManager
2019-08-16 17:02:36 -07:00
Ted Yu
e85e0bafbd Drop GetPods from ActualStateOfWorld 2019-08-16 12:59:23 -07:00
fredkan
67aeb09c6a error config attachable plugin 2019-08-15 22:29:18 +08:00
fredkan
6524b83d53 error config attachable plugin 2019-08-15 20:41:32 +08:00
fredkan
87243f49a4 fix error set csiplugin attachable 2019-08-15 17:08:21 +08:00
Jan Safranek
5b69362ff0 Skip unused volumes in VolumeManager
DesiredStateOfWorldPopulator should skip a volume that is not used in any
pod. "Used" means either mounted (via volumeMounts) or used as raw block
device (via volumeDevices).

Especially when block feature is disabled, a block volume must not get into
DesiredStateOfWorld, because it would be formatted and mounted there.
2019-08-15 10:48:38 +02:00
Jan Safranek
8d580262f9 Refactor makeMountsMap into GetPodVolumeNames
The function will be handy in subsequent patches. Also change custom maps
into sets.String.
2019-08-15 10:48:38 +02:00
Kubernetes Prow Robot
345e58b434
Merge pull request #75071 from mkimuram/issue/74552e2e
Fix volume reconstruction and add e2e tests
2019-08-06 06:05:55 -07:00
Jan Safranek
c744385804 Add limit of stored errors
There should be a limit so the set of errors does not grow too much in
case of some bug in the populator.
2019-08-05 10:06:44 +02:00
Lee Verberne
b5d592e735 Simplify VisitContainers pattern in volumemanager populator 2019-08-03 14:13:46 +00:00
Masaki Kimura
c130b77a48 Move nil check for mapperPlugin earlier in reconstructVolume 2019-08-01 20:36:21 +00:00
Jan Safranek
bab81b809b Don't create mounter when reconstructing block volume
CSI mounter will create a new directory + json for a filesystem volume,
leading to even more orphaned files/directories.
2019-08-01 20:04:10 +00:00
Lee Verberne
7bce18b0ce Generated code for Ephemeral Containers in kubelet 2019-07-24 16:25:52 +00:00
Lee Verberne
ea212d5d49 Add support for ephemeral containers to the kubelet 2019-07-24 16:24:26 +00:00
Jan Safranek
af0c2fe572 Fix some error messages 2019-07-22 10:54:33 +02:00
Jan Safranek
17be780651 Add events to dswp 2019-07-19 17:46:21 +02:00
Kubernetes Prow Robot
2501a9083d
Merge pull request #68513 from codenrhoden/mount-refactor
Refactor util/mount interface in prep for moving out of k/k
2019-06-28 13:57:28 -07:00
Mario Valderrama
a44b754405 Refactor online volume resize unit tests 2019-06-17 18:24:22 +02:00
Travis Rhoden
be7da5052f Refactor pkg/util/mount to be more reusable
This patch refactors pkg/util/mount to be more usable outside of
Kubernetes. This is done by refactoring mount.Interface to only contain
methods that are not K8s specific. Methods that are not relevant to
basic mount activities but still have OS-specific implementations are
now found in a mount.HostUtils interface.
2019-06-14 09:35:18 -06:00
Hemant Kumar
0f62e3fbe8 Make language of error msgs and func names consistent: ExpandVolumeInUse
change feature flag
Fix the e2e test for online and offline expansion
2019-06-03 12:26:56 -04:00
Robert Krawitz
38753efcc7 Set sizeLimit to the smaller of the ephemeral storage limit and the emptydir limit (if set) 2019-05-29 15:17:47 -04:00
Robert Krawitz
f8661d6240 Use xfs_quota command to apply quotas 2019-05-29 15:12:28 -04:00
Robert Krawitz
448e0c44c6 Apply quotas via syscalls using cgo. 2019-05-29 15:12:28 -04:00
Andrew Kim
c919139245 update import of generic featuregate code from k8s.io/apiserver/pkg/util/feature -> k8s.io/component-base/featuregate 2019-05-08 10:01:50 -04:00
Hemant Kumar
15e2421f90 Add jan and msau42 as approver for volumemanager 2019-05-03 13:34:50 -04:00
Xing Yang
000ab86788 Move CSIDriver Lister to the controller 2019-04-05 12:20:11 -07:00
Kubernetes Prow Robot
428a8e04d4
Merge pull request #75458 from jingxu97/March/raceofActualDesiredState
Fix race condition between actual and desired state in kublet volume manager
2019-03-25 13:24:51 -07:00
Jing Xu
7cb5df6728 Fix race condition between actual and desired state in kublet volume
manager

This PR fixes the issue #75345. This fix modified the checking volume in
actual state when validating whether volume can be removed from desired state or not. Only if volume status is already mounted in actual state, it can be removed from desired state.
For the case of mounting fails always, it can still work because the
check also validate whether pod still exist in pod manager. In case of
mount fails, pod should be able to removed from pod manager so that
volume can also be removed from desired state.
2019-03-18 17:08:48 -07:00
caiweidong
92aee22646 Remove the unused variabe: syncDuration in volumemanager 2019-03-15 10:04:41 +08:00
Hemant Kumar
89d1de9eb9 Rename ExandFS to NodeExpand
Handle resize error in online resizing
Use NodeExpandable plugin to mark volumes that require node expansion
2019-03-08 09:21:44 -05:00
Yecheng Fu
8940976602 Distinguish volume path with mount path 2019-02-27 19:31:26 +08:00
Kubernetes Prow Robot
a684bd5eb1
Merge pull request #73556 from msau42/triage-72931
Mark volume as in use even when node status didn't change
2019-02-12 17:29:05 -08:00
Michelle Au
80a2698a02 Add unit tests for volumesinuse during node status update 2019-02-12 13:46:30 -08:00
Roy Lenferink
b43c04452f Updated OWNERS files to include link to docs 2019-02-04 22:33:12 +01:00
Kubernetes Prow Robot
ca1336957e
Merge pull request #73404 from tsmetana/fix-kubelet-volume-test
Kubelet: Fix volumemanager test race
2019-02-04 06:21:11 -08:00
Kubernetes Prow Robot
6fb69d3967
Merge pull request #71648 from houjun41544/20181203-volume
Fix an error in comment
2019-02-03 12:02:45 -08:00
danielqsj
cf1fb8a1cd fix format issue 2019-01-31 22:01:13 +08:00
Daniel (Shijun) Qian
e72b32558c
Merge branch 'master' into keymutex 2019-01-31 20:50:57 +08:00
danielqsj
657a1a1a34 change import alias of utils/strings 2019-01-30 10:44:09 +08:00
danielqsj
093328e57f migrate to k8s.io/utils/strings 2019-01-30 10:24:00 +08:00
Andrew Kim
84191eb99b replace pkg/util/file with k8s.io/utils/path 2019-01-29 15:20:13 -05:00
Tomas Smetana
45464f0349 Kubelet: Fix volumemanager test race 2019-01-28 15:05:26 +01:00
Kubernetes Prow Robot
54c4428eb4
Merge pull request #71276 from jingxu97/Oct/uncertain
Handle failed attach operation leave uncertain volume attach state
2019-01-17 22:52:57 -08:00
gaorong
545aca3d18 fix some typos 2019-01-08 12:46:05 +08:00
Kubernetes Prow Robot
cd02e752bf
Merge pull request #71509 from cofyc/fix71438
Fix device mountable volume names in DSW
2018-12-19 00:51:52 -08:00
Yecheng Fu
67552a8f6e Add unit test to verify generated volume names. 2018-12-12 13:03:21 +08:00
houjun
5c6eb3a153 Fix an error in comment 2018-12-03 11:35:07 +08:00
Yecheng Fu
5ada29ac16 Rename GetUniqueVolumeNameForNonAttachableVolume to GetUniqueVolumeNameFromSpecWithPod 2018-12-01 12:25:32 +08:00
Yecheng Fu
f5642bbe88 Fix device mountable volume names in DSW 2018-12-01 12:25:14 +08:00
k8s-ci-robot
79e5cb2cb7
Merge pull request #71302 from liggitt/verify-unit-test-feature-gates
Split mutable and read-only access to feature gates, limit tests to readonly access
2018-11-29 21:45:12 -08:00
Jordan Liggitt
2498ca7606 drop VerifyFeatureGatesUnchanged 2018-11-21 11:51:33 -05:00
Hemant Kumar
d2b6e30143 Fix bug with volume getting marked as not in-use with pending op
Add test for verifying volume detach
2018-11-20 11:58:47 -05:00
Jing Xu
562d0fea53 Handle failed attach operation leave uncertain volume attach state
This commit adds the unit tests for the PR. It also includes some files
that are affected by the function name changes.
2018-11-19 17:21:49 -08:00
k8s-ci-robot
ec2e767e59
Merge pull request #71167 from msau42/block-beta
Promote raw block volume support to beta
2018-11-16 20:28:03 -08:00
k8s-ci-robot
f877b2257a
Merge pull request #71074 from jsafrane/volume-manager-races
Fix race between MountVolume and UnmountDevice
2018-11-16 18:22:14 -08:00
Matthew Wong
dd517c9ff2 Update all tests to account for BlockVolume enabled by default 2018-11-16 13:38:59 -05:00
Jordan Liggitt
248d661327 Add tests to ensure storage feature gate changes don't escape packages 2018-11-16 10:52:53 -05:00
Michelle Au
fd64c08240 Fix storage feature gate test setting 2018-11-16 10:49:40 -05:00
Jan Safranek
5283537401 Fixed clearing of devicePath after UnmountDevice
UnmountDevice must not clear devicepath, because such devicePath
may come from node.status (e.g. on AWS) and subsequent MountDevice
operation (that may be already enqueued) needs it.
2018-11-16 13:24:42 +01:00
Yecheng Fu
dfe0a08f05 Improve usability of CSI plugin metrics
Use full qualified plugin name if volume spec is present.
2018-11-12 09:21:49 +08:00
Davanum Srinivas
954996e231
Move from glog to klog
- Move from the old github.com/golang/glog to k8s.io/klog
- klog as explicit InitFlags() so we add them as necessary
- we update the other repositories that we vendor that made a similar
change from glog to klog
  * github.com/kubernetes/repo-infra
  * k8s.io/gengo/
  * k8s.io/kube-openapi/
  * github.com/google/cadvisor
- Entirely remove all references to glog
- Fix some tests by explicit InitFlags in their init() methods

Change-Id: I92db545ff36fcec83afe98f550c9e630098b3135
2018-11-10 07:50:31 -05:00
knight
5ed6da9d9e
remove unnecessary time type
remove unnecessary time type, improve volume_manager.go
2018-10-11 21:06:46 +08:00
Kubernetes Submit Queue
c5e74d128d
Merge pull request #66884 from NickrenREN/attacher-detacher-refactor
Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Attacher/Detacher refactor for local storage

Proposal link: https://github.com/kubernetes/community/pull/2438

**What this PR does / why we need it**:

Attacher/Detacher refactor for the plugins which just need to mount device, but do not need to attach, such as local storage plugin.

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #

**Special notes for your reviewer**:

```release-note
Attacher/Detacher refactor for local storage
```

/sig storage
/kind feature
2018-08-15 07:03:48 -07:00
NickrenREN
c7e4466873 attacher/detacher refactor 2018-08-14 11:12:41 +08:00
Fabio Bertinatto
376a94e039 Add more metrics for Volume Manager
Specifically:

* Number of volumes in ActualStateofWorld and DesiredStateofWorld
* Number of times ReconstructVolume Spec on kubelet failed
2018-08-13 17:36:36 +02:00
Seth Jennings
0413850d14 kubelet: volumemanager: poll immediate when waiting for volume attachment 2018-08-02 16:41:15 -05:00
Kubernetes Submit Queue
7ac32a4f7a
Merge pull request #61983 from mikedanese/closur
Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

volumemanager: remove unneccesary closure

```release-note
NONE
```
2018-08-01 14:26:12 -07:00
Mike Danese
f3922dff19 volumemanager: remove unneccesary closure 2018-07-31 18:48:15 -07:00
Russ Cox
2bd91dda64 kubernetes: fix printf format errors
These are all flagged by Go 1.11's
more accurate printf checking in go vet,
which runs as part of go test.

Lubomir I. Ivanov <neolit123@gmail.com>
applied ammend for:
  pkg/cloudprovider/provivers/vsphere/nodemanager.go
2018-07-11 00:10:15 +03:00
Jeff Grafton
23ceebac22 Run hack/update-bazel.sh 2018-06-22 16:22:57 -07:00
Vladimir Vivien
3569287993 Refactor of GenerateMapDeviceFunc to delegate Map call to volume plugin. 2018-06-03 17:25:37 -04:00
Hemant Kumar
179e5d7006 Rename online resizine feature gate 2018-05-31 17:28:12 -04:00
mlmhl
ca12c73323 implement kubelet side online file system resize for volume 2018-05-31 17:10:24 +08:00
Mike Danese
f427531179 boring 2018-04-18 09:55:57 -07:00
vikaschoudhary16
cedbd93255 Make 'pod' package to use unified checkpointManager
Signed-off-by: vikaschoudhary16 <choudharyvikas16@gmail.com>
2018-04-16 01:30:20 -04:00
Kubernetes Submit Queue
05c88cc831
Merge pull request #61549 from jingxu97/Mar/aswVolumeSpec
Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Add volume spec to mountedPod in actual state of world

Add volume spec into mountedPod data struct in the actual state of the
world.
Fixes issue #61248
2018-04-10 17:43:38 -07:00
Jing Xu
264e4ed38c Add volume spec to mountedPod in actual state of world
Add volume spec into mountedPod data struct in the actual state of the
world.
2018-03-30 12:07:52 -07:00
Kubernetes Submit Queue
d23066e8b3
Merge pull request #61373 from msau42/subpath-reconstruct
Automatic merge from submit-queue (batch tested with PRs 61453, 61393, 61379, 61373, 61494). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Use inner volume name instead of outer volume name for subpath directory

**What this PR does / why we need it**:
Fixes volume reconstruction for PVCs with subpath

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #61372

**Special notes for your reviewer**:


**Release note**:

```release-note
ACTION REQUIRED: In-place node upgrades to this release from versions 1.7.14, 1.8.9, and 1.9.4 are not supported if using subpath volumes with PVCs.  Such pods should be drained from the node first.
```
2018-03-22 06:20:28 -07:00
Kubernetes Submit Queue
3e97969bdc
Merge pull request #52841 from chentao1596/fix-wrongs-under-volumnmanager
Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

fix some unhandled errors, ineffectual assignments, and misspellings

What this PR does / why we need it:

When I browsed the source code under the package, i found some variables have been defined, but not be used, so i changed it! At the same time, a spelling mistake has been found, thank you!
2018-03-21 17:41:32 -07:00
Michelle Au
91c557f504 Use inner volume name instead of outer volume name for subpath directory 2018-03-21 17:13:38 -07:00
Kubernetes Submit Queue
9fe565aba5
Merge pull request #61071 from jingxu97/Mar/podvolumerace
Automatic merge from submit-queue (batch tested with PRs 61203, 61071). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Fix issue with race condition during pod deletion

This PR fixes two issues
1. When desired_state_populator removes podvolume state, it should check
whether the actual state already has the volume before deleting it to
make sure actual state has a chance to add the volume into the state
2. When checking podVolume still exists, it not only checks the actual
state, but also the volume disk directory because actual state might not
reflect the real world when kubelet starts.

fixes issue #60645
2018-03-15 17:23:04 -07:00
Jing Xu
9bd006de40 Fix issue with race condition during pod deletion
This PR fixes two issues
1. When desired_state_populator removes podvolume state, it should check
whether the actual state already has the volume before deleting it to
make sure actual state has a chance to add the volume into the state
2. When checking podVolume still exists, it not only checks the actual
state, but also the volume disk directory because actual state might not
reflect the real world when kubelet starts.
2018-03-15 15:35:37 -07:00
Kubernetes Submit Queue
78e58025d0
Merge pull request #60888 from jsafrane/fix-asw-reconstruct-inuse
Automatic merge from submit-queue (batch tested with PRs 60888, 61225). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Mark reconstructed volumes as reported InUse

When a newly started kubelet finds a directory where a volume should be,
it can be fairly confident that the volume was mounted by previous kubelet
and therefore the volume must have been in node.status.volumesInUse.

Therefore we can mark reconstructed volumes as already reported so
subsequent reconcile() can fix the directory and put the mounted volume
into actual state of world.

Fixes: #60645

**Release note**:

```release-note
NONE
```

/sig storage
/sig node
cc: @gnufied @jingxu97
2018-03-15 15:01:58 -07:00
Jan Safranek
c51e843f3c Mark reconstructed volumes as reported InUse
When a newly started kubelet finds a directory where a volume should be,
it can be fairly confident that the volume was mounted by previous kubelet
and therefore the volume must have been in node.status.volumesInUse.

Therefore we can mark reconstructed volumes as already reported so
subsequent reconcile() can fix the directory and put the mounted volume
into actual state of world.
2018-03-07 17:39:24 +01:00
Jan Safranek
5110db5087 Lock subPath volumes
Users must not be allowed to step outside the volume with subPath.
Therefore the final subPath directory must be "locked" somehow
and checked if it's inside volume.

On Windows, we lock the directories. On Linux, we bind-mount the final
subPath into /var/lib/kubelet/pods/<uid>/volume-subpaths/<container name>/<subPathName>,
it can't be changed to symlink user once it's bind-mounted.
2018-03-05 09:14:44 +01:00
chentao1596
efb4c37270 fix some ineffectual assignments and misspellings for the package of 'pkg/kubelet/volumemanager' 2018-03-02 17:00:38 +08:00
Kubernetes Submit Queue
47b1d72d47
Merge pull request #60505 from jsafrane/fix-logf
Automatic merge from submit-queue (batch tested with PRs 60342, 60505, 59218, 52900, 60486). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Fixed log calls in VolumeManager

Use glog.Infof() instead of glog.Info()

**Release note**:

```release-note
NONE
```


/sig storage
/sig node
2018-02-28 06:07:24 -08:00
Kubernetes Submit Queue
907329e2eb
Merge pull request #55584 from zhangxiaoyu-zidif/move-check-pod-forward
Automatic merge from submit-queue (batch tested with PRs 60376, 55584, 60358, 54631, 60291). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

move pod-check forward

**What this PR does / why we need it**:

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #

**Special notes for your reviewer**:

**Release note**:

```release-note
NONE
```
2018-02-28 03:37:25 -08:00
Kubernetes Submit Queue
b1ef631e59
Merge pull request #57408 from zouyee/kubelet-1
Automatic merge from submit-queue (batch tested with PRs 60236, 60332, 57375, 60451, 57408). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

improve code comment

**What this PR does / why we need it**:
improve code comment
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #

**Special notes for your reviewer**:

**Release note**:

```NONE

```
2018-02-28 01:12:36 -08:00
Kubernetes Submit Queue
231874c74c
Merge pull request #53689 from foxyriver/fix-defer
Automatic merge from submit-queue (batch tested with PRs 53689, 56880, 55856, 59289, 60249). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

simplify defer statement

**What this PR does / why we need it**:

simplify defer statement
2018-02-28 00:00:25 -08:00
Jan Safranek
e8a85fc0d3 Fixed log calls in VolumeManager
Use glog.Infof() instead of glog.Info()
2018-02-27 15:48:16 +01:00
wackxu
b3ba80b223 update bazel 2018-02-27 20:23:36 +08:00
wackxu
f737ad62ed update import 2018-02-27 20:23:35 +08:00
Kubernetes Submit Queue
68f496d50f
Merge pull request #59710 from sailingwithoutwind/fix/some-typo
Automatic merge from submit-queue (batch tested with PRs 50724, 59025, 59710, 59404, 59958). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

some typo

**What this PR does / why we need it**:

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #

**Special notes for your reviewer**:

**Release note**:

```release-note

```
2018-02-26 21:34:38 -08:00
Kubernetes Submit Queue
2966cdaa12
Merge pull request #58559 from mlmhl/volumemanager_cleanup
Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

use GetUniqueVolumeNameFromSpec instead of implementing it manually for kubelet volume manager

**What this PR does / why we need it**:

`volumeName` is only used for attachable plugin, so we should resolve it inside the `if` statement. Besides, we can use the already exist `GetUniqueVolumeNameFromSpec` mthod instead of invoking `GetVolumeName` and `GetUniqueVolumeName` manually.

**Release note**:

```release-note
NONE
```

/sig storage
/kind cleanup
2018-02-26 19:34:22 -08:00
NickrenREN
dad0fa07b7 rename StorageProtection to StorageObjectInUseProtection 2018-02-21 10:48:56 +08:00
Jeff Grafton
ef56a8d6bb Autogenerated: hack/update-bazel.sh 2018-02-16 13:43:01 -08:00
Kubernetes Submit Queue
99c87cf679
Merge pull request #59923 from jsafrane/volumemanager-logs
Automatic merge from submit-queue (batch tested with PRs 59873, 59933, 59923, 59944, 59953). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Rework volume manager log levels

- all normal logs to go to level 4
- too frequent / duplicate logs go to level 5 (e.g. when something else logged similar message not too far away).

I checked that there is no excessive spam in the log - reconciler runs every 100ms, but it does not log anything if there is nothing to do.

**What this PR does / why we need it**:
This will help us debug flakes. E2e tests do not log levels 10-12 used in volume manager

**Release note**:

```release-note
NONE
```

/sig storage
/sig node
cc: @jingxu97 @sjenning
2018-02-15 20:16:38 -08:00